Kalshi Benchmark

CFTC-regulated US prediction market exchange. REST trade API (trade-api/v2) with documented per-tier rate limits; the market data WebSocket requires authentication.

Live benchmark results

1. #1of 12

   Trading

   Prediction market open interest: where capital actually sits

   Open interest

   $1.41B

   p50 · 24h

2. #2of 2

   Trading

   Polymarket WebSocket latency, live connection and update speed from 3 regions

   WS connect to snapshot

   3.5 min

   p50 · 24h

3. #3of 6

   Trading

   Best prediction market API, ranked by live latency and uptime

   API latency (price endpoint)

   123 ms

   p50 · 24h

4. #3of 6

   Trading

   Prediction market API rate limits, tested with a daily ramp

   Warm book latency

   121 ms

   p50 · 24h

5. #4of 18

   Trading

   Cheapest perp venue to hold a position, live funding normalized

   Funding cost to hold a long 24h

   -3.19 bps

   p50 · 24h

6. #5of 24

   Trading

   Perp DEX volume share, live 24h notional ranked

   24h perp volume

   $1.57B

   p50 · 24h

7. #8of 22

   Trading

   Funding paid to hold an ETH perp long for 30 days, per venue, live

   Funding paid, 30d ETH long

   36.8 bps

   p50 · 24h

8. #13of 16

   Trading

   Perp DEX asset breadth: non-crypto markets live, stocks + indices + forex + commodities

   Non-crypto markets

   9

   p50 · 24h

9. #16of 19

   Trading

   Perp DEX funding stability, 24h stddev of ETH funding ranked

   24h ETH funding stddev

   0.045%

   p50 · 24h

10. #20of 23

    Trading

    Most tradable markets on a perp DEX, live count per venue

    Active markets

    28

    p50 · 24h

11. #21of 22

    Trading

    Perp DEX volume to open interest: 24h turnover per dollar of OI, live

    Volume / OI (24h)

    22.1x

    p50 · 24h

Compare Kalshi to alternatives

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• 

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  10 shared benchmarks

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Browse every head to head pair

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• Prediction market open interest: where capital actually sits

  
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  <a href="https://openchainbench.com/benchmarks/pm-open-interest"><img src="https://openchainbench.com/api/badge/pm-open-interest/kalshi" alt="Ranked #1 on OpenChainBench: Prediction market open interest: where capital actually sits" height="44" /></a>

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• Best prediction market API, ranked by live latency and uptime · US East

  
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  <a href="https://openchainbench.com/benchmarks/pm-api-latency?region=us-east"><img src="https://openchainbench.com/api/badge/pm-api-latency/kalshi?region=us-east" alt="Ranked #1 on OpenChainBench: Best prediction market API, ranked by live latency and uptime from US East" height="44" /></a>

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  [![Ranked #1 on OpenChainBench: Best prediction market API, ranked by live latency and uptime from US East](https://openchainbench.com/api/badge/pm-api-latency/kalshi?region=us-east)](https://openchainbench.com/benchmarks/pm-api-latency?region=us-east)

• Prediction market API rate limits, tested with a daily ramp · US East

  
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  <a href="https://openchainbench.com/benchmarks/pm-rate-limits?region=us-east"><img src="https://openchainbench.com/api/badge/pm-rate-limits/kalshi?region=us-east" alt="Ranked #1 on OpenChainBench: Prediction market API rate limits, tested with a daily ramp from US East" height="44" /></a>

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  [![Ranked #1 on OpenChainBench: Prediction market API rate limits, tested with a daily ramp from US East](https://openchainbench.com/api/badge/pm-rate-limits/kalshi?region=us-east)](https://openchainbench.com/benchmarks/pm-rate-limits?region=us-east)